Two problems related to ignition module have been reported for the 1998 Toyota Camry. The most recently reported issues are listed below.
Ignition key jams, will not turn to start engine, and can not be removed when engine is turned off. Frequency of jamming increased until I switched to using the spare "master" key. It worked fine for a while and then the same problem occurred. Finally, I used the "valet key" and it has worked fine for nearly 2 years. When I recently went to the local Toyota dealer to purchase 2 new keys, after nearly 2 hours I was advised that due to the age of the vehicle the new keys could not be programmed without the purchase and installation a new ignition module (on-board computer) costing $1,812 including labor and 2 keys. Toyota's customer experience office has refused any assistance.
Engine cuts off, bad ecu.